In addition to his career as an astrologer and "prophet", Nostradamus published a 1555 treatise that included a section on what?

The story behind the answer

Making jams and jellies is correct because in 1555 Nostradamus published a work often titled “Treatise on Cosmetics and Conserves” (Traité des fardemens et confitures), which included recipes for fruit preserves, jellies, and candied peels alongside cosmetic and medicinal preparations. The term “confitures” then referred broadly to preserved sweets, a skill linked to apothecary work.

Interesting context: Before he became famous for his prophecies, Nostradamus trained as an apothecary. In the Renaissance, sugar was both medicine and preservative, so making conserves was part of health and culinary practice. Memory tip: Think “Nostradamus didn’t just predict the future—he preserved it,” by sealing fruit in jars for the days